Envelope opener



FIG. 1 is a perspective view of an envelope opener showing my new design;

FIG. 2 is a perspective view of the envelope opener from the opposite side;

FIG. 3 is a front elevational view of the envelope opener;

FIG. 4 is a side elevational view of the envelope opener; and,

FIG. 5 is a top plan view of the envelope opener. 

I claim the ornamental design for an envelope opener, as shown and described. 